Electric controllers for swimming goggles

ABSTRACT

Swimming goggles are developed to allow a swimmer to see the end of the pool without moving their head while swimming in backstroke. Using a light reflector, a swimmer can see through a backstroke viewing window, allowing them to see along the direction that they are moving when swimming backstroke. Using a motion sensor and electric control circuits, a swimming goggle can provide optimum views for the swimmer wearing the swimming goggle. Using a sound speaker, a swimming goggle can play music and provide voice reports to the swimmer. The electronic controller for a swimming goggle can either be embedded as part of a swimming goggle, or can be detachable to support more than one swimming goggle.

This application is a continuation-in-part application of previouspatent application with a Ser. No. 15/275,583, with a title “SwimmingGoggles”, and filed by David Shau on Sep. 26, 2016.

BACKGROUND OF THE INVENTION

The present invention relates to electric controllers for swimminggoggles.

Swimming is a sport that keeps people in great shape. Swimming exercisesmost of the body's muscles, and swimming can even save one's life. Formost of competitive sports, it is almost guaranteed that people willeventually get hurt by sport injuries. In comparison, swimming is asport that rarely causes serious injury. However, like me, most swimmershave bumped their head at the end of the pool while swimming backstroke.While at full sprinting speed, this type of injury may even result inminor concussions, and is also quite painful. It is desirable to designswimming goggles that allow swimmers to see the end of the pool withoutmoving their head while swimming in backstroke. Also, backstrokeswimmers often swim in a curvy zigzag path in their lane instead of asimple direct straight line. If the swimmer swims in a zigzag path, thenthe distance that they swim will be longer, and it also makes them lookbad. It is desirable for a swimmer to see the sights behind them whileswimming backstroke, so that they may line up their position, thusallowing the swimmer to swim in a straight line. It is also desirable tohave swimming goggles that can help swimmers maintain proper headposition while swimming backstrokes.

Decorato in U.S. Pat. No. 3,944,345 disclosed a swimming goggle equippedwith special lens that attaches onto the front of the eye sockets,increasing the user's lateral vision. It, however, does not enable theability to see behind his or herself, and does not provide wide enoughvisual range to support backstroke.

Lathrop in U.S. Pat. No. 4,286,340 disclosed a pair of comfortablecompetition goggles with anti fog washing, watertight fits that enhancethe eyesight, and improved forward vision that allows the user to seethe wall without lifting their head while swimming the crawl, breast,and butterfly strokes. The swimming goggles, however, does not improvebackwards vision, and cannot benefit the ability to see the end of thepool without moving their head while swimming in backstroke.

Tagyo in U.S. Pat. No. 5,581,822 disclosed an attractively shaped pairof goggles that provide watertight vision, and also allow the user toswim faster due to its smooth single large lens. It, however, does notprovide the ability to see the wall while swimming backstroke.

Yokota in US Patent Application No. 20060010587 disclosed a pair ofgoggles that use a contact section that attaches to the area around theeye in the eye socket, therefore, improving the user's field vision. Thegoggles also prevent light refraction that may cause discomfort to theowner. These goggles may enhance the peripheral vision while swimmingbackstroke, but it does not give a clear vision of the wall; theswimmers still need to change their normal head positions to see thewall. It also does not use a light reflector.

Desbordes in French patent number FR 2630653 disclosed a swimming gogglethat has a backstroke viewing window and a light reflector. The lightreflector does not switch position with respect to the front viewingwindow, and it does not change position depending on the body motions ofthe swimmer.

Huang in Chinese patent number CN201105124 disclosed a swimming gogglethat has a backstroke viewing window and a light reflector. Huangapparatus provides visibility to overhead direction when the swimmer isin position for backstroke, freestyle, and diving in order to avoidcolliding with other swimmers in a crowed swimming pool. Huang'sapparatus does not address the needs to view different parts of theswimming pool while the swimmer is swimming backstroke versus freestyle.

None of the above prior art swimming goggles comprise electric controlmechanisms.

Gear worn by swimmers must be able to withstand strong forces in thewater when swimmers are diving, turning, or swimming various strokes athigh speeds. The previous application with the Ser. No. 15/275,583disclosed swimming goggles embedded with an electronic controller ableto analyze the actions of a swimmer to provide feedback using voice,music, or by adjusting goggle components. When the electronic controlleris built-in as part of a swimming goggle, it is inseparable from thegoggle, which naturally allows the controller to withstand forcesexerted by the water while swimming. The disadvantage of having anembedded electronic controller in a swimming goggle is that thecontroller will be useless once the goggle breaks or wears out. It istherefore desirable to have an electronic controller that can bedetached from a swimming goggle so that the same electronic controllercan be utilized on multiple swimming goggles.

SUMMARY OF THE PREFERRED EMBODIMENTS

A primary objective of the preferred embodiments is, therefore, toprovide swimming goggles that allow the user to see behind him or herwithout changing their normal head position while swimming backstroke.This will reduce the chance of injury, since they can now see where thewall is. Another objective is to prevent the swimmer from swimming in azigzag manner when they swim across the pool in their lane. This willallow the swimmer to go faster, and prevent the user from crashing intothe lane lines. Another primary objective is to provide sophisticatedmotion related information to a swimmer while the swimmer is swimming.Another objective is to provide an electronic controller that can bedetached from a swimming goggle so that the same electronic controllercan be utilized on multiple swimming goggles. These and other objectivesare assisted by providing swimming goggles with backstroke viewingwindows at the eye sockets, as well as an integrated circuit attached tothe goggle.

While the novel features of the invention are set forth withparticularly in the appended claims, the invention, both as toorganization and content, will be better understood and appreciated,along with other objects and features thereof, from the followingdetailed description taken in conjunction with the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1(a) shows one example of the swimming goggles of the presentinvention that has a backstroke viewing window on one eye socket;

FIG. 1(b) shows the swimming goggle in FIG. 1(a) while the lightblocking cover of the backstroke viewing window is closed;

FIG. 1(c) shows a goggle without a light blocking cover on thebackstroke viewing window;

FIG. 1 (d) shows a goggle with backstroke viewing windows on both eyesockets;

FIG. 2(a, b) are cross-section views of an eye socket that canautomatically switch the position of the light blocking cover of thebackstroke viewing window;

FIG. 3(a) shows a simplified view of a user who is swimming freestyle onhis front;

FIG. 3(b) shows a simplified view of a user who is swimming backstrokeon his back;

FIG. 4(a, b) are cross-section views of an eye socket that canautomatically switch the positions of the light blocking cover and thelight reflector;

FIG. 5(a) shows a swimming goggle that has an electric controller (500)and an electric sound speaker (505);

FIG. 5(b) shows a close up of the electric controller in FIG. 5(a);

FIG. 5(c) is a symbolic block diagram for the electric controller andoutput devices in FIG. 5(b);

FIG. 5(d) is a symbolic block diagram illustrating how procedures areexecuted to determine the actions of a swimmer wearing a swimming goggleequipped with the electric controller in FIG. 5(c);

FIG. 5(e) is a flowchart for an exemplary application program used bythe electric controller in FIG. 5(c);

FIG. 5(f) is a flowchart for another exemplary application program usedby the electric controller in FIG. 5(c);

FIG. 5(g) shows a table that lists exemplary modes supported by theelectric controller in FIG. 5(c);

FIGS. 6(a-c) are simplified symbolic diagrams showing the structures ofan exemplary electronic attachment for a swimming goggle; and

FIGS. 7(a-c) are simplified symbolic diagrams showing the structures ofanother exemplary electronic attachment for a swimming goggle.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIGS. 1(a-d) show examples of the goggles of the present invention. Thegoggles in these examples comprise two eye sockets (101,102) connectedby a nosepiece (103) and a head strap (104). Each eye socket (101,102)has a forward viewing window (111) that is mounted on a suction socket(113). Typically, the forward viewing window (111) is made oftransparent plastic plate, and the suction socket (113) is made ofrubber or plastic. The suction socket (113) sticks onto swimmer's eyes,creating a water tight seal while providing a space between the eye andthe forward viewing window (113), allowing clear under-water vision.These structures are similar to those used in conventional swimminggoggles. In addition, the examples in FIGS. 1(a-d) contain structuresthat are designed to allow the swimmer to see the end of the poolwithout moving their head while swimming in backstroke. For example,FIGS. 1(a, b) illustrate a goggle that has a backstroke viewing window(122) opened at the upper side (112) of the eye socket. A backstrokeviewing window, by definition, is a transparent window on the eye socketof a swimming goggle that faces upward direction while the swimmerwearing the goggle is standing upright so that it faces the end ofswimming pool when the swimmer is in normal head position while swimmingbackstroke. A backstroke viewing window is typically nearly vertical tothe front viewing window. In this example, the backstroke viewing window(122) is made of transparent plastic. To prevent unwanted peripherallights, the backstroke viewing window (122) can be covered with a lightblocking cover (121). FIG. 1(a) illustrates the situation when the lightblocking cover (121) of the backstroke viewing window (122) is opened,and FIG. 1(b) illustrates the situation when the light blocking cover(121) is closed. In this example, a light reflector (123) is placedinside the eye socket (101), as illustrated in FIGS. 1(a, b). In thisexample, the light reflector (123) is a transparent plastic platesupporting the functions of a half-mirror. A half-mirror, by definition,is a light reflector that is partially transparent and partiallyreflecting. In this example, the index of reflection of the lightreflector (123) is adjusted in such way that the reflected view is moredominating than the transparent view. When the light blocking cover(121) of the backstroke viewing window (122) is opened, as shown in FIG.1(a), the light that travels through the backstroke viewing window (122)is reflected by the light reflector (123), allowing the swimmer to seethe end of the pool without moving head while swimming in backstroke.When the light blocking cover (121) of the backstroke viewing window(122) is closed, as shown in FIG. 1(b), almost no light would come fromthe upward direction so that the swimmer would see views at the frontdirection through the half-mirror light reflector (123).

While the preferred embodiments have been illustrated and describedherein, other modifications and changes will be evident to those skilledin the art. For example, the light reflector (123) can be a mirrorinstead of a half-mirror. For another example, FIG. 1(c) shows anothergoggle that has a backstroke viewing window (124) without a lightblocking cover. This goggle can be manufactured at lower cost, but usersmay see unwanted lights from upward direction. Another example in FIG.1(d) shows a goggle with backstroke viewing windows (124, 125) and lightreflectors (123, 126) in both eye sockets (101,102). This goggle allowsbetter upward vision because both eyes are now able to see the samereflection, but front view will be less clear. It is to be understoodthat there are many other possible modifications and implementations sothat the scope of the invention is not limited by the specificembodiments discussed herein.

The light blocking cover (121) of the backstroke viewing window (122)shown in FIGS. 1(a, b) may be opened or closed manually. A swimmer canopen the light blocking cover while swimming backstroke, and close itwhile swimming other strokes. While swimming melody, a swimmer needs toswim backstroke and other strokes. Flipping the light block cover whileswimming can be troublesome. It is desirable to open or close the lightblocking cover (121) automatically according to the stroke the swimmeris swimming. FIGS. 2(a-b) show cross-section views of an eye socket thatcan open or close the light blocking cover (121) automatically. In thisexample, the light blocking cover (121) is designed to rotate around arotation axis (201). When the socket is at a position as illustrated inFIG. 2(a), the light blocking cover (121) is closed due to gravity.Under this situation, the light (208) passes directly through the halfmirror (123) allowing the user to see what they would normally see whilefacing forward. Due to gravity, the light blocking cover (121) is alsoclosed when the eye socket is facing downward. FIG. 3(a) illustrates thesituation when a swimmer (301) wearing the goggle is swimming freestyle.Under this situation, the light blocking cover (121) of the backstrokeviewing window is closed so that the swimming goggle functions as aconventional goggle. While swimming backstroke, the eye socket wouldface upward as illustrated by FIG. 3(b) and by the cross section diagramin FIG. 2(b). At this position, the light blocking cover (121) wouldrotate backward along the rotation axis (201) by gravity, opening thebackstroke viewing window (122) as illustrated in FIG. 2(b). The light(209) through the opened window (122) is reflected by the lightreflector (123), allowing the swimmer (301) to see the end of the poolwithout moving his head while swimming in backstroke.

While the preferred embodiments have been illustrated and describedherein, other modifications and changes will be evident to those skilledin the art. It is to be understood that there are many other possiblemodifications and implementations so that the scope of the invention isnot limited by the specific embodiments discussed herein. For example,the light reflector also can be automatically switched into position asshown by the cross-section diagrams in FIGS. 4(a-b).

The eye socket shown in FIGS. 4(a-b) is similar to the eye socket shownin FIGS. 2(a, b) except that it has a light reflector (211) that canrotate against a rotation axis (212). A weight (213) is placed near theend of the light reflector (211) so that its position can be switched bygravity. When the socket is at a position illustrated in FIG. 4(a), thelight reflector (211) is pulled by gravity to be in contact with thefront viewing window (111) and functions as part of the front viewingwindow. Under this situation, the eye socket behaves as a conventionaleye socket. Due to gravity, the position of this light reflector (211)would remain the same while the swimmer is swimming freestyle, breast,or butterfly strokes. While swimming backstroke, the eye socket wouldface upward, and the light reflector (211) would fall down due togravity, as shown in FIG. 4(b). The light (209) through the openedbackstroke viewing window (122) is reflected by the light reflector(211), allowing the swimmer to see the end of the pool without movingtheir head while swimming in backstroke.

The preferred embodiments of the present invention provide swimminggoggles that allow the user to see the end of swimming pool withoutchanging normal head position while swimming backstroke. The chance ofinjury is reduced because backstroke swimmers can now see where the wallis. The backstroke swimmer also can adjust swimming direction by visionto swim in straight line to achieve better time. These and otherobjectives are achieved by opening backstroke viewing windows at the eyesockets of swimming goggles. A light blocking cover can be used toprevent unwanted light going through the backstroke viewing window. Thelight blocking cover can be operated manually or automatically. A lightreflector is typically used with the backstroke viewing window. Thislight reflector can be a half mirror or a full mirror. The lightreflector also can be designed to change position automaticallyaccording the stroke the swimmer is swimming.

While the preferred embodiments have been illustrated and describedherein, other modifications and changes will be evident to those skilledin the art. It is to be understood that there are many other possiblemodifications and implementations so that the scope of the invention isnot limited by the specific embodiments discussed herein. While theexamples in FIG. 4(a, b) automatically switch the position of the lightblocking cover and the light reflector by gravity, we can also use thebuoyant force of water, the body motions of the swimmer, and othermethods to switch the positions of the light blocking cover or the lightreflector. FIGS. 5(a-g) show an exemplary swimming goggle that switchesthe position of the light blocking cover and the position of the lightreflector by an electric controller.

FIG. 5(a) shows a swimming goggle that has the same structures as thoseof the swimming goggle in FIG. 1(a) except that the swimming goggle inFIG. 5(a) has an electric sound speaker (505) attached to its head strap(104), and an electric controller (500). This electric controller (500)is able to control the position of a light reflector (513) and theposition of a light blocking cover (515). The electric controller (500)is covered by a water-tight cover (501) when the goggle is used inwater. A button (503) on the water-tight cover (501) allows the user toopen the cover in order to adjust operation modes of the electriccontroller (500). A motion sensor (520) is placed inside of the electriccontroller (500). This motion sensor (520) is attached to the swimminggoggle at a fixed position with respect to the forward viewing window(111), and outputs electric signals that are related to the motions ofthe swimmer wearing the swimming goggle. One example of a motion sensorthat can be used for this purpose is the LIS332AR motion sensor made bySTMicroelectronics. LIS332AR is an accelerometer that measures athree-dimensional acceleration vector, and outputs three voltages, whichare proportional to the three components of the acceleration vectoralong its x, y, and z directions. For the example in FIGS. 5(a-g), themotion sensor (520) can be an LIS332AR accelerometer that is placed at aposition where its x axis is pointing towards the viewing directionthrough the forward viewing window (111), as illustrated by the dashedlined arrows in FIGS. 5(a, b). This direction will be called the “Facedirection” in the following discussions. The y axis of the motion sensor(520) is pointing towards the viewing direction through the back strokeviewing window (122), as illustrated by the dashed lined arrows in FIGS.5(a, b). This direction will be called the “Head direction” in thefollowing discussions. For this example, the electric sound speaker(505) is attached to the head strap (104) of the swimming goggle in FIG.5(a). The electric sound speaker (505) also can be an earbud or aspeaker in other shapes.

A user can open the water-tight cover (501) on the swimming goggle toreach the front panel of the electric controller (500). As shown in FIG.5(b), the front panel of the electric controller (500) comprises a USBinterface socket (529), four mode-select switches (M1-M4), two volumecontrol switches (521-522), two channel-select switches (523, 524), anda power switch (525). All the other electric components of the electriccontroller (500) are sealed in water-proof packages so that they are notvisible in FIG. 5(b). The motion sensor (520) is drawn in dashed linesin FIG. 5(b) with dashed lined arrows pointing to the head direction andthe face direction. FIG. 5(c) is a block diagram that shows thecomponents of the electric controller (500). The intelligence of theelectric controller (500) is provided by an integrated circuit (530). Inthis example, the integrated circuit (530) comprises a memory module(532) and a logic module (531). One example of the logic module is aprogrammable microcontroller. One example of the memory module is aFLASH nonvolatile memory device. The memory module (532) and the logicmodule (531) can be one integrated circuit chip in the same package, andcan also be separated integrated circuit chips in separated packages. Inthis example, the integrated circuit is programmable through theUniversal Serial Bus (USB) interface (529) shown in FIGS. 5(b, c). Acomputer or a mobile electronic device can be used to program theintegrated circuit (530) using the USB interface (520). The power linesof the USB interface are connected to a rechargeable battery (539). Theelectric connection between the rechargeable battery (539) and theintegrated circuit (530) is controlled by a power switch (525). Thispower switch (525) is a toggle switch on the front panel of the electriccontroller (500), as shown in FIG. 5(b). The mode-select switches(M1-M4) determine the operation mode of the integrated circuit (530); anexemplary list of operation modes is shown in FIG. 5(g). The volumecontrol switches (521, 522) control the volume of the speaker (505). Thechannel-select switches (523, 524) can be used to select music to beplayed by the speaker (505).

The logic module (531) of the integrated circuit (530) is able toanalyze the outputs of the motion sensor (520) to determine the outputsof the integrated circuit (530), while the swimmer wearing the swimminggoggle is swimming in water. The integrated circuit (530) is able tocontrol the position of the reflector (513) and the light blocking cover(515) based on the motions of the swimmer detected by the motion sensor(520). The integrated circuit is also able to control the outputs of theelectric sound speaker (505) while the swimmer wearing the swimminggoggle is swimming in water.

FIG. 5(d) is a simplified symbolic float chart for the sequences ofevents used to determine the actions of the swimmer using the outputs ofthe motion sensor (520). In FIGS. 5(d-g), the symbol “H acc” means themotion sensor detected a large acceleration in the head direction, andthe symbol “H-acc” means the motion sensor detected a large negativeacceleration in the head direction. For example, if the motion sensor(520) detects no motion initially, followed by a large acceleration inhead direction (H acc), followed by a free fall, and ending with a largenegative acceleration in head direction (H-acc), then the logic module(531) of the integrated circuit (530) would know that the swimmer justdived into water. This process is shown in the first column of FIG.5(d). If the motion sensor (520) detects no motion initially, followedby a large acceleration in head direction (H acc), and ending with alarge negative acceleration in head direction (H-acc) without a freefall in between, then the logic module (531) of the integrated circuit(530) would know that the swimmer just pushed off the wall of a swimmingpool. This process is shown in the second column of FIG. 5(d). If themotion sensor (520) detects a large negative acceleration in headdirection (H-acc), followed by a change in direction of the gravity gforce relative to the orientation of the motion sensor (520), and endingwith a large acceleration in head direction (H acc), then the logicmodule (531) of the integrated circuit (530) would know that the swimmerjust performed a flip turn. This process is shown in the third column ofFIG. 5(d). If the motion sensor (520) detects a large negativeacceleration in head direction (H-acc), which ended with no motion, thenthe logic module (531) of the integrated circuit (530) would know thatthe swimmer just finished swimming. This process is shown in the fourthcolumn of FIG. 5(d). The motion sensor (520) also can tell theintegrated circuit (530) the angle between gravity (g) relative to theface direction. When the swimming is swimming face down, the integratedcircuit (530) would know that the swimmer is swimming freestyle; whenthe swimming is swimming face up, the integrated circuit (530) wouldknow that the swimmer is swimming backstroke; and when the swimming isswimming face front for a period of time during each stroke, theintegrated circuit (530) would know that the swimmer is swimming eitherbreaststroke or butterfly, which can be distinguished by detailedanalysis, as shown by the examples in FIG. 5(d).

Using the procedures in FIG. 5(d) to determine the actions of theswimmer, application programs stored in the nonvolatile memory (532) ofthe integrated circuit (530) in the electric controller (500) cansupport sophisticated control of the light reflector (513), the lightblocking cover (515), and the electric sound speaker (505). FIG. 5(e) isa flowchart for an exemplary application program used by the electriccontroller in FIG. 5(c). When a dive or push-off is detected after aresting state, the integrated circuit (530) starts to execute speed anddistance calculations. If the motion sensor (520) is an accelerometer,speed can be calculated by integration of acceleration along headdirection, and distance can be calculated by integration of speed. Usingthe electric sound speaker (505), the integrated circuit (530) also canplay music that is stored in integrated circuit memory device (532). Thevolume and channel control buttons (521-524) also can be disabled toprevent accidental changes caused by water, which can exert forcesagainst the buttons. Furthermore, the integrated circuit (530) wouldmeasure time using an internal timer, wait for 5 seconds, and check ifthe swimmer is swimming in backstroke or not by detecting face directionof the swimmer. If the swimmer is swimming backstroke, the integratedcircuit (530) switches the light reflector (513) to backstroke position,and opens the light blocking cover (515) so that the swimmer can viewthe end of the swimming pool. The integrated circuit can also lap count.After the motion sensor (520) detects a large negative acceleration inthe head direction (H-Acc), the integrated circuit (530) analyzes thenext action of the swimmer. If the swimmer makes a turn, then theintegrated circuit (530) updates the lap count, and reports the lapcount to the swimmer using the electric sound speaker (505); optionally,the lap time and stroke count of the swimmer also can be reported to theswimmer at this time. If the swimmer stops swimming, then the integratedcircuit (530) reports the total time to the swimmer using the electricsound speaker (505); optionally, the total time can be compared withtarget times, and the integrated circuit (530) can provide feedback suchas encouraging words using the electric sound speaker (505); music alsocan be turned off, while the volume and channel control buttons(521-524) can be enabled at this time.

FIG. 5(f) is a flowchart for another exemplary application program usedby the electric controller in FIG. 5(c). In this example, when apush-off or a dive is detected after resting state, the integratedcircuit (530) starts time measurement, disables volume and channelcontrol buttons (521-524), and starts speed and distance calculations.It also can measure dive distance. After the swimmer takes a stroke, theintegrated circuit (530) determines the stroke type and updates thestroke count. The integrated circuit (530) can also estimate the numberof Calories burned by the swimmer based on the outputs of the motionsensor. Feedback can be provided using voice through the electric soundspeaker (505). After the motion sensor (520) detects a large negativeacceleration in the head direction (H-Acc), the integrated circuit (530)analyzes the next action of the swimmer. If the swimmer makes a turn,then the integrated circuit (530) will update the lap count, and reportthe lap count to the swimmer using the electric sound speaker (505);optionally, the lap time, stroke count, and Calories burned by theswimmer also can be reported at this time. If the swimmer stopsswimming, then the integrated circuit (530) reports the total time tothe swimmer using the electric sound speaker (505); optionally, thetotal time can be compared with target times, and the integrated circuit(530) can provide feedback such as encouraging words using the electricsound speaker (505). The total number of Calories burned by the swimmercan be reported, while the volume and channel control buttons (521-524)can be enabled at this time.

While the preferred embodiments have been illustrated and describedherein, other modifications and changes will be evident to those skilledin the art. It is to be understood that there are many other possiblemodifications and implementations so that the scope of the invention isnot limited by the specific embodiments discussed herein. Using aprogrammable integrated circuit, a swimming goggle equipped with anelectric controller is capable of performing wide varieties of functionsto support a swimmer wearing the swimming goggle. FIG. 5(g) shows atable that lists exemplary modes supported by the electric controller inFIG. 5(c). For example, when the mode-select switches (M1-M4) are set tobe (0, 1, 0, 0), the electric sound speaker (505) is enabled to playmusic. The electric sound speaker (505) is able to change the way toplay music depending on the motions of the swimmer wearing the swimminggoggle. For example, when the mode-select switches (M1-M4) are set to be(0,1,1,0), the electric sound speaker (505) plays music with a pace thatis synchronized with the swimming pace of the swimmer; when themode-select switches (M1-M4) are set to be (0,1,1,1), the integratedcircuit (630) adjusts the volume of the music played by the electricsound speaker (505) according to the swimming speed of the swimmer; whenthe mode-select switches (M1-M4) are set to be (1,0,1,1), the integratedcircuit (630) uses the electric sound speaker (505) to provide a voicereport of the estimated number of Calories burned by the swimmer; andwhen the mode-select switches (M1-M4) are set to be (1,1,1,1), theintegrated circuit (630) store data to the non-volatile memory forfurther detailed analysis. The electric sound speaker of the swimminggoggle is able to play music at a beat or a volume that is related tothe motions of the swimmer wearing the swimming goggle. More examplesare listed in FIG. 5(g).

The exemplary electronic controller (500) and the electric sound speaker(505) in FIG. 5(a) are embedded inside a swimming goggle. When theelectronic controller is built-in as part of a swimming goggle, it isnaturally inseparable from the goggle, which allows the controller towithstand forces exerted by the water while swimming. The disadvantageof having an embedded electric controller in a swimming goggle is thatthe controller will be useless once the goggle breaks or wears out.FIGS. 6(a-c) are simplified symbolic diagrams showing the structures ofan exemplary electronic attachment for a swimming goggle that solves theproblem. The electronic device (600) in this example is able towithstand strong forces in the water when swimmers are diving, turning,or swimming various strokes at high speeds. Furthermore, this electronicdevice (600) can be detached from the swimming goggle (650) so that thesame electronic device can be used with different swimming goggles.

FIG. 6(a) is a simplified symbolic diagram showing a swimmer wearing aswimming goggle (650) with an electronic device (600) attached to thehead strap (104) of the swimming goggle. For this example, the swimminggoggle comprises an eye socket that has a transparent forward viewingwindow attached to a goggle frame, where the goggle frame has abackstroke viewing window opened on a top portion of the goggle framedisposed away from the transparent forward viewing window, and aposition-switchable light blocking cover (515) attached to an edge ofthe backstroke viewing window. This light blocking cover (515) canswitch position with respect to the edge of the backstroke viewingwindow. Its position is controlled electronically by the electronicdevice (600) that is attached to the swimming goggle. This swimminggoggle (650) further comprises a position-switchable light reflector(513) that can switch positions with respect to the front viewing windowof the eye socket. The position of the position-switchable lightreflector (513) is controlled electronically by the electronic device(600) attached to the swimming goggle.

The electronic device (600) attached to the head strap (104) of theswimming goggle (650) comprises a motion sensor (620), an electric soundspeaker (605), an integrated circuit (630), a water-proof package (609)that encloses the motion sensor (650) and the integrated circuit (630),and a means to attach the water-proof package (609) to the head strap(104) of a swimming goggle (650). In this example, a loop Velcro (641)and a hook Velcro (642) wrap around the head strap (104) of the swimminggoggle (650) to provide a reliable attachment between the water-proofpackage (609) and the head strap (104) of the swimming goggle (650), asshown in FIGS. 6(a-c). The water-proof package (609) also can encloseother components such as a USB interface socket, none-volatile memorydevice (632), battery, power switches, and other control switches. Asshown in FIG. 6(b), the front panel of the water-proof package (609)comprises two volume control switches (621-622), two channel-selectswitches (623, 624), and a power switch (625); it can also have a USBinterface socket and mode-select switches placed at the back side of thepackage. A motion sensor (620) is placed inside the electronic device(600) as shown by the dashed lines in FIG. 6(a). While in use, thismotion sensor (620) is attached near the ear of the swimmer, where its xaxis is pointing towards the “face direction”, and its y axis ispointing towards the “head direction”, as illustrated by the dashedlined arrows in FIG. 6(a). The integrated circuit (630) in theelectronic device (600) is able to read the outputs of the motion sensor(620) and analyze the motions of the swimmer wearing the swimminggoggles with the attached electronic device while the swimmer isswimming in water. The electronic device (600) illustrated in FIGS.6(a-c) comprises all the components of the electronic controller (500)described in FIGS. 5(a-c). Therefore, it is able to support all thefunctions described in FIGS. 5(d-g).

For the example in FIGS. 6(a-c), the electric sound speaker (605) isplaced inside an earbud. Typical earbuds would easily fall out while theswimmer is swimming in water. The electric sound speaker (605) in thisexample is placed inside an earbud that has a moldable ear tip (606), asshown in FIGS. 6(a-c). This moldable ear tip (606) can be molded intodifferent shapes in order to tightly fit the external ear canal ofdifferent users. In addition, the earbud (605) is connected to thewater-proof package (609) of the electronic device with a solid elasticconnector (607). This elastic connector (607) provides an elastic forcethat helps push the earbud into the external ear canal of the swimmer,as illustrated in FIGS. 6(a-c). As a result, the earbud (605) will notfall out when the swimmer is diving, turning, or swimming at high speed.

FIGS. 7(a-c) are simplified symbolic diagrams showing the structures ofanother exemplary electronic attachment for a swimming goggle. Thestructures of the electronic device (700) in FIGS. 7(a-c) are almostidentical to those of the electronic device (600) in FIGS. 6(a-c),except for the supporting structures of the electric sound speaker(705). For this example, the electric sound speaker (705) of theelectronic device (700) is attached to the water-proof package (609) ofthe electronic device (700) with a sold elastic connector (707), and theelectric sound speaker (705) is pressed onto the side of the head of theswimmer, as shown in FIGS. 7(a-c). In this way, the electric soundspeaker (705) can function reliably when the swimmer is diving, turning,or swimming at high speed.

While specific embodiments of the invention have been illustrated anddescribed herein, it is realized that other modifications and changeswill occur to those skilled in the art. It is therefore to be understoodthat the appended claims are intended to cover all modifications andchanges as fall within the true spirit and scope of the invention.

What is claimed is:
 1. An electronic device comprising: a motion sensor;an electric sound speaker; an integrated circuit; a water-proof packagethat encloses said motion sensor and said integrated circuit; and meansto attach said water-proof package to the head strap of a swimminggoggle; wherein said integrated circuit is able to analyze the motionsof the swimmer wearing the swimming goggle with said electronic deviceattached while the swimmer is swimming in water, and said integratedcircuit is able to control the outputs of said electric sound speaker,and the integrated circuit uses the outputs of the motion sensor toestimate the number of Calories burned by the swimmer wearing theswimming goggle with the attached electronic device.
 2. The electronicdevice in claim 1 wherein the integrated circuit is able to use theoutputs of the motion sensor to determine whether or not to disablevolume control of the electric sound speaker.
 3. An electronic devicecomprising: a motion sensor; an electric sound speaker; an integratedcircuit; a water-proof package that encloses said motion sensor and saidintegrated circuit; and means to attach said water-proof package to thehead strap of a swimming goggle; wherein said integrated circuit is ableto analyze the motions of the swimmer wearing the swimming goggle withsaid electronic device attached while the swimmer is swimming in water,and said integrated circuit is able to control the outputs of saidelectric sound speaker, and the electric sound speaker of the electronicdevice is placed in an earbud that is connected to the water-proofpackage by a solid elastic connector that provides an elastic force tohelp push the earbud into the external ear canal of the swimmer wearingthe swimming goggle with said electronic device attached.
 4. Theelectric sound speaker of the electronic device in claim 3 is attachedto the water-proof package with a solid elastic connector, and theelectric sound speaker is pressed on the side of the head of the swimmerwearing the swimming goggle with said electronic device attached.
 5. Anelectronic device comprising: a motion sensor; an electric soundspeaker; an integrated circuit; a water-proof package that encloses saidmotion sensor and said integrated circuit; and means to attach saidwater-proof package to the head strap of a swimming goggle; wherein saidintegrated circuit is able to analyze the motions of the swimmer wearingthe swimming goggle with said electronic device attached while theswimmer is swimming in water, and said integrated circuit is able tocontrol the outputs of said electric sound speaker, and the integratedcircuit of the electronic device is able to change how the music isplayed through the electric sound speaker based on the motions of theswimmer wearing the swimming goggle with said electronic deviceattached.
 6. The electric sound speaker of the electronic device inclaim 1 is able to provide a voice that reports the number of Caloriesburned by the swimmer wearing the swimming goggle with said electronicdevice attached.